From monomer synthesis to polymers with pendant aldehyde groups

International audienc

Petro-Based and Bio-Based Plasticizers: Chemical Structures to Plasticizing Properties

Polymeric materials, in particular PVC, can find vari- ous industrial utilizations thanks to the use of plasticizers added during their processing. The most famous applications include wires and cables, coatings, flooring, paintings, packag- ing. . . After some generalities concerning plasticization theories and the description of plasticized petro- and bio-based poly- mers, this review details the well-known different petro-based plasticizers and more particularly phthalates which represent the most important category of PVC plasticizers. Owing to migration problems, impact on the human health and the envi- ronment, alternative candidates have been developed by researchers. Renewable resources and their wastes offer a large platform for the design of bio-based plasticizers using polysaccharidic or lipidic structures. In an in-depth analysis, the bio-based plasticizer structures, their groups and substitu- ents (ester groups, alkyl chains, aromatic rings. . .) are gathered and examined in order to be able to predict their plasticizing efficiency and design new molecular and macromolecular plas- ticizers from natural resources

Synthesis and applications of unsaturated cyclocarbonates

International audienceGreat attention has always been paid to monomers bearing at least two reactive groups, one for copolymerization and one for further reaction, in particular, for cross-linking. Such reactive groups should be reactive enough for crosslinking but should not prevent any copolymerization of monomers. Cyclic carbonate groups are currently gaining increasing attention both from academic and industrial communities. Indeed, these functions allow better control in terms of spontaneous crosslinking reactions than other reactive groups and could also come from renewable resources such as glycerine or CO2. Although many papers report the use of cyclic carbonates for synthesis of linear polyurethanes, this present review is the first one that focuses on the synthesis and use of functional cyclocarbonate molecules. In the first part, the present review goes into details of the synthesis of carbonate groups. In the second part, this review is dedicated to the synthesis and the application of various monomers bearing cyclic carbonate groups to polymers

Functionalization of cardanol: towards biobased polymers and additives

International audienceAmong the renewable resource materials, cashew nut shell liquid (CNSL) is considered as an important starting material due to its unique structural features, abundant availability and low cost. A large number of chemicals and products have been developed starting from CNSL by taking advantage of the three reactive sites, namely, phenolic hydroxyl, aromatic ring and unsaturation(s) in the alkenyl side chain. This comprehensive review deals with general information on CNSL, its purification and separation methods, reactivity and applications in polymer chemistry